CSI FEEDBACK FOR MULTI-PDSCH TRANSMISSION
    112.
    发明公开

    公开(公告)号:US20240030986A1

    公开(公告)日:2024-01-25

    申请号:US17442083

    申请日:2021-08-05

    Applicant: Apple Inc.

    CPC classification number: H04B7/0632 H04B7/0626

    Abstract: Some embodiments include an apparatus, method, and computer program product for implementing Channel State information (CSI) feedback for multi-Physical Downlink Shared Channel (PDSCH) transmissions in a wireless communication system. Some embodiments enable a user equipment (UE) to determine Channel Quality Indicators (CQI) and/or Precoding Matrix Indicators (PMI) for multi-PDSCH transmissions that account for effects of a duration of the multi-PDSCH transmission including the maximum interval between the first and last PDSCH transmissions on the CQI and PMI determinations. Some embodiments include a base station that detects a need for a change in a beam direction and adjusts the beam direction accordingly based on the PMI determinations. Some embodiments enable a desired hybrid automatic repeat request (HARQ)-ACK feedback transmission from a single multi-PDSCH transmission. Some embodiments include performing HARQ bundling with an update to the Type 1 HARQ-ACK codebook based on the multi-PDSCH transmission.

    DETERMINING PROCESSING TIME FOR HIGH FREQUENCY RANGE

    公开(公告)号:US20230362914A1

    公开(公告)日:2023-11-09

    申请号:US17440615

    申请日:2021-01-14

    Applicant: Apple Inc.

    CPC classification number: H04W72/1263 H04W72/51

    Abstract: Some embodiments include an apparatus, method, and computer program product for facilitating processing times in a 5G wireless communications system. When operating at higher frequency subcarrier spacing (SCS), slot times for receiving and/or transmitting data between user equipment (UE) and a 5G Node B (gNB) become shorter. Because of this, some UE may face difficulty in processing physical downlink shared channel (PDSCH), physical uplink shared channel (PUSCH), and/or physical downlink control channel (PDCCH) data with sufficient speed. To address potential limitations, a flexible minimum processing time may be used to accommodate different UE processing capabilities. The UE may report its processing capabilities to the gNB. The gNB may then schedule communications according to the UE’s processing capabilities. The gNB may consider whether the UE implements a single or multiple processing engines. Further, the gNB may apply single-slot and/or multi-slot scheduling techniques to also prevent timing issues.

    JOINT CHANNEL ESTIMATION FOR MULTIPLE DOWNLINK TRANSMISSIONS

    公开(公告)号:US20230344677A1

    公开(公告)日:2023-10-26

    申请号:US18129672

    申请日:2023-03-31

    Applicant: Apple Inc.

    CPC classification number: H04L25/0204 H04L5/0051 H04W72/0446

    Abstract: Mechanisms are provided for a user equipment (UE) to perform joint channel estimation for multiple downlink transmissions. A method performed by a UE can include reporting, to a base station, a capability of the lIE to perform joint channel estimation, receiving a configuration for joint channel estimation, where the configuration includes a time domain window (TDW) indicating a duration of the joint channel estimation, and further determining whether to perform the joint channel estimation. Based on a determination to perform the joint channel estimation, the method can include determining an actual time domain window within the TDW for performing the joint channel estimation, and performing the joint channel estimation within the actual time domain window for a first physical downlink shared channel (PDSCH) transmission based on a first demodulation reference signals (DMRS), and a second PDSCH transmission based on a second DMRS.

    DOWNLINK (DL) AND UPLINK (UL) SCHEDULING FOR TRANSMISSION ABOVE 52.6 GHZ

    公开(公告)号:US20230239846A1

    公开(公告)日:2023-07-27

    申请号:US17439680

    申请日:2020-10-16

    Applicant: Apple Inc.

    CPC classification number: H04W72/0453 H04W72/23 H04W72/02

    Abstract: Some aspects of this disclosure relate to apparatuses and methods for implementing downlink and uplink scheduling in communication above 52.6 GHz. For example, some aspects of this disclosure relate to a base station. The base station includes a transceiver configured to communicate over a wireless network with a user equipment (UE) and a processor communicatively coupled to the transceiver. The processor determines that the communication between the base station and the UE is in a frequency range above 52.6 GHz. In response to the determination, the processor disables a frequency main resource assignment (FDRA), modifies a Resource Block Group (RBG) size, or modifies a Resource Indication Value (RIV) determination. The processor generates a Downlink Channel Indicator (DCI) based at least on one or more of the disabled FDRA, the modified RBG size, or the modified RIV determination. The processor transmits, using the transceiver, the DCI to the UE.

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